OOP

OOP

1. Association

   • Class Association
     • like inheritance everything is related from params to methods with each other
   • Object Association
     • interaction between 2 object of different class
     • Simple Association
       • with respect to navigation / direction
         • One way association
         • Two way association
       • with respect to number of objects ( cardinatlity)
         • binary association - donated by arrow or line
           • employee* company1
         • Ternary association - diamond with line connected
           • Teacher1 student* course*
         • N-ary - association between 3 or more classes
     • Composition
       • An object may be composed of other smaller objects, the relationship between the “part” objects and the “whole” object is known as Composition, Composition is represented by a line with a filled-diamond head towards the composer object